Mold the clay to the shape of a volcano on top of the plywood board. Leave a hole in the top large enough to fit a small container into. The top of the container needs to fit below the rim of the volcano hole.
Paint the volcano and board with your choice of colors. Mountains are typically brown or gray and can have a white snow cap toward the top. The board can be painted gray to look like rocks or green to look like grass. Allow a few minutes for the paint to dry on the surface.
Insert the container in the hole created. Add 2 spoonfuls of baking soda and 1 spoonful of liquid dish washing soap. Then add 5 drops each of red and yellow food coloring.
Pour 1 ounce of vinegar into the container. Your volcano will now erupt.